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Finding the Third Proportional to 121,270.50 and 261,900

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Solution

The third proportional to 121,270.50 and 261,900 is: 565,608.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,270.50 : 261,900 = 261,900 : x
  2. Step 2: Convert to fraction form
    121,270.50/261,900 = 261,900/x
  3. Step 3: Cross multiply
    121,270.50x = 261,900 × 261,900
  4. Step 4: Simplify right side
    121,270.50x = 68,591,610,000
  5. Step 5: Solve for x
    x = 68,591,610,000/121,270.50
  6. Step 6: Final answer
    x = 565,608.37

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.